| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| J and E Trailer Court | city | South Dakota | United States | 44.10278 | -103.52556 | 4996 | 284 |
| James | city | South Dakota | United States | 45.46611 | -98.21222 | 1299 | 223 |
| James Valley Junction | city | South Dakota | United States | 44.38056 | -98.29528 | 1302 | 2619 |
| Jamesville | city | South Dakota | United States | 43.10278 | -97.48333 | 1187 | 397 |
| Java | city | South Dakota | United States | 45.50333 | -99.88611 | 2083 | 112 |
| Jefferson | city | South Dakota | United States | 42.6025 | -96.55889 | 1125 | 1796 |
| Jeffrey historical | city | South Dakota | United States | 45.72361 | -100.57917 | 1797 | 70 |
| Jobee Acres | city | South Dakota | United States | 45.44611 | -98.39389 | 1299 | 5107 |
| Johnson Siding | city | South Dakota | United States | 44.08472 | -103.4375 | 4366 | 370 |
| Johnsons Addition | city | South Dakota | United States | 43.65861 | -96.80861 | 1587 | 2073 |
| Johnsonville | city | South Dakota | United States | 44.54444 | -96.78528 | 1774 | 285 |
| Jolly Dump | city | South Dakota | United States | 44.59361 | -103.8675 | 3198 | 1777 |
| Jordan Junction | city | South Dakota | United States | 43.385 | -100.02889 | 2099 | 75 |
| Joubert | city | South Dakota | United States | 43.4275 | -98.66639 | 1591 | 353 |
| Julian historical | city | South Dakota | United States | 44.99722 | -97.76806 | 1791 | 242 |
| Junction City | city | South Dakota | United States | 42.78667 | -96.78583 | 1164 | 790 |
| Junction Ranger Station | city | South Dakota | United States | 43.84611 | -103.69417 | 6000 | 390 |
| Junius | city | South Dakota | United States | 44.00639 | -97.24389 | 1699 | 252 |
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